| 1966N Season Leaders - Team - Offense - Final | ||||
| Offense | Most | Team(s) | Fewest | Team(s) |
| Total Points. | 438 | Washington | 230 | Atlanta |
| Total TDs. | 56 | Washington | 26 | Minnesota, Philadelphia |
| PATs. | 54 | Washington | 25 | Atlanta, Philadelphia |
| 2 Pt Conversions. | 0 | 4 or more teams | 0 | 4 or more teams |
| FG Attempts. | 34 | Baltimore, LA Rams | 19 | San Francisco |
| FG Made. | 23 | Dallas, Baltimore | 7 | Atlanta |
| Safeties. | 3 | LA Rams | 0 | 4 or more teams |
| First Downs. | 293 | Cleveland | 195 | St Louis |
| by Rushing. | 123 | Cleveland | 52 | Pittsburgh |
| by Passing. | 181 | Washington | 95 | Chicago |
| by Penalty. | 24 | San Francisco | 10 | Washington |
| Total Yards. | 5,393 | Cleveland | 3,513 | St Louis |
| Rushing Attempts. | 505 | LA Rams | 396 | Detroit |
| Yards Gained. | 2,363 | Cleveland | 1,096 | Pittsburgh |
| Av Gain. | 4.7 | Cleveland | 2.8 | Pittsburgh |
| TDs. | 18 | Cleveland | 5 | Baltimore, NY Giants |
| Passing Attempts. | 501 | San Francisco | 374 | Dallas |
| Completions. | 285 | Washington | 182 | Chicago |
| Yards Gained. | 3,775 | Washington | 2,038 | Chicago |
| Sacked. | 84 | Pittsburgh | 21 | San Francisco |
| Completion %. | 62.2 | Washington | 44.1 | Chicago |
| TDs. | 36 | Washington | 10 | Chicago |
| Interceptions. | 36 | Detroit | 6 | Green Bay |
| Pass Rating. | 104.9 | Green Bay | 38.2 | Chicago |
| 1966N Season Leaders - Team - Defense - Final | ||||
| Defense | Fewest | Team(s) | Most | Team(s) |
| Total Points. | 180 | Green Bay | 432 | Detroit |
| Total TDs. | 19 | Green Bay | 55 | Detroit, Atlanta, NY Giants |
| PATs. | 19 | Green Bay | 54 | Detroit |
| 2 Pt Conversions. | 0 | 4 or more teams | 0 | 4 or more teams |
| FG Attempts. | 19 | LA Rams | 37 | San Francisco |
| FG Made. | 9 | Pittsburgh | 24 | Washington |
| Safeties. | 0 | 4 or more teams | 2 | Dallas |
| First Downs. | 177 | LA Rams | 283 | Atlanta |
| by Rushing. | 46 | LA Rams | 112 | Philadelphia |
| by Passing. | 114 | Green Bay, LA Rams | 162 | Detroit, Washington, NY Giants |
| by Penalty. | 11 | Cleveland | 26 | San Francisco |
| Total Yards. | 3,505 | LA Rams | 5,330 | Atlanta |
| Rushing Attempts. | 390 | LA Rams | 490 | Philadelphia |
| Yards Gained. | 1,122 | LA Rams | 2,162 | Philadelphia |
| Av Gain. | 2.9 | LA Rams | 4.4 | Cleveland, Philadelphia |
| TDs. | 6 | Green Bay, LA Rams | 19 | NY Giants, Philadelphia |
| Passing Attempts. | 382 | Pittsburgh | 473 | Dallas |
| Completions. | 202 | Pittsburgh | 267 | Detroit |
| Yards Gained. | 2,261 | Minnesota | 3,736 | Washington |
| Sacked. | 57 | Dallas | 19 | Minnesota |
| Completion %. | 49.2 | LA Rams | 63.7 | Detroit |
| TDs. | 11 | Dallas, LA Rams | 37 | Atlanta |
| Interceptions. | 29 | Dallas | 17 | Atlanta, NY Giants |
| Pass Rating. | 52.0 | Dallas | 100.2 | Atlanta |